Publications
- Chaurasia, D., Daram, M., Kumar, R., Rao, N. T., Sangode, V., Srivastava., Tripathi, A., Chakraborty, S., Lakra, A., Kumar, A., Sethi, D., S. N. Tripathi and Kar, P., 2026, Provably Outlier-resistant Semi-parametric Regression for Transferable Calibration of Low-cost Air-quality Sensors, preprint,2511.19810
- Kumar, S., S.N. Tripathi and Kumar, S., 2026., Instability mechanisms of the bag-stamen breakup, Physics of Fluids, 38, 023328.
- Lakra, A., Kumar, A., Sethi, D., Bhowmik, H. S., Jain, V., and S. N. Tripathi., 2026, High-resolution source apportionment and health risks of PM2.5-bound trace elements across a major Indian city: Seasonal and diurnal insights from a multi-site campaign using 15 a mobile laboratory platform, Atmospheric Environment, 365.121675
- Anandh, PC, S. N. Tripathi, Godhani, N., Pandey, M., Rai, P., Agrawal, N., Kumar, A and Snehadeep B., Environ. Sci. Technol. 2025, 59, 48, 25527–25536 Regional Air Quality Management: A Data-Driven Air-shed Approach in the Eastern IGP Regions, accepted for Publication in Environmental Science & Technology.
- Lakra, A., Shukla, A. K., Bhowmik, H. S., Yadav, A.K., i Jain, V., Murari, V., Gaddamidi, S., Lalchandani, V. and S. N. Tripathi., 2025, Comparative analysis of winter 16 composite-PM2.5 in Central Indo Gangetic Plain cities: Combined organic and inorganic source apportionment and characterization, with a focus on the photochemical age effect on secondary organic aerosol formation, Atmospheric Environment, 338, 120827.
- Kumar, M., Joshi, M., Dwivedi, A.K., Kumar, S., Saud, T., Khan, A., Mishra, G., Saha, N., Ganju, S., S. N. Tripathi and Sapra B. K., 2025. Study of the deposition and resuspension phase of aerosol particles in a straight test pipe, Frontiers in Nuclear Engineering
- Singh, A., Swain, B., Sebastain, M., S.N. Tripathi, Pöhlker, M., Allan, J., McFiggans, G., Pöschl, U., Su, H., Martin, Scot T., Andreae, M. O., Ravikrishna, R., Cheng, Y., Coe, H., Liu, P and Gunthe, S. S., 2025, Anthropogenic Emissions in Coastal India Strongly Influence New Particle Formation and Cloud Condensation Nuclei Activity, American Chemical Society ES&T.
- Ren, Y., Oxford, C.R., Zhang, D., Liu, X., Zhu, H., Dillner, A.M., White, W.H., Chakrabarty, R.K., Hasheminassab, S, Diner, D.J, Le Roy E.J., Kumar, J, Viteri, V., Song, K., Akoshile, C., Amador-Muñoz, O., Asfaw, A., Chang, R.Y., Francis, D., Gahungu, P., Garland. R.M., Grutter, M., Kim, J., Langerman, K., Lee, P.C., Lestari, P., Mayol-Bracero, O.L., Naidoo, M., Nelli, N., O'Neill, N., Park, S.S., Salam, A., Sarangi, B., Schechner, Y., Schofield, R., S.N. Tripathi, Windwer, E., Wu, M.T., Zhang, Q., Rudich, Y., Brauer, M and Martin RV, 2025, Black carbon emissions generally underestimated in the global south as revealed by globally distributed measurements, Nature communications, 16, 7010.
- Maurya, S., Gehlot, H and S.N. Tripathi., 2025, Optimal Deployment of Movable Sensors for Air Quality Monitoring, ASCE's Journal of Infrastructure Systems.
- Lalchandani, V., S.N. Tripathi., Srivastava D., Mishra, G., Thamban, N.M., Mishra, S., Tripathi, N., Wang, L., Prévôt, A. S. H., Bhowmik, Himadri H. S., Dixit, K., Sahu, L. K and Gunthe, S.S., 2025, Semi-volatile oxygenated organics and ammonium chloride increasing sub-micron aerosol hygroscopicity, cloud condensation nuclei and PM1 mass in the Delhi region
- Joshi, M., Mariam, Khan, A., P.M. Shamjad, Chakraborty, A., S.N. Tripathi and B.K. Sapra, 2025, Steam Aerosol Interaction Experiments: Measurement of Aerosol and Liquid Droplet size Distributions.
- Hao, Y., Strähl, J., Khare, P., Cui, T., Schneider-Beltran, K., Qi, L., Wang, D., Top, J., Surdu, M., Bhattu, D., Bhowmik, H. S., Vats, P., Rai, P., Kumar, V., Ganguly, D., Szidat, S., Uzu, G., Jaffrezo, Jean-Luc Jaffrezo., Elazzouzi, R., Rastogi, N., Slowik, J., Haddad, I.E., S. N. Tripathi., Prévôt, A. S.H and Dällenbach, K.R., 2025, Transported smoke from crop residue burning as the major source of organic aerosol and health risks in northern Indian cities during post-monsoon, Environment International, 109583.
- Chaudhry, S. K., S. N. Tripathi., Reddy, T. V. R., Madhwal, S., Yadav, A.K., Sahu, R and Pradhan, P.K., 2025, Assessment of seasonal variation in PM2.5 concentration using low-cost sensors: a case study of Jaipur city, India, Atmospheric Environment, 121067.
- Mishra, G., Kumar, M., S. N. Tripathi, Joshi, M., Kumar, S., Saud, T., Chauhan, S., Khan, A and Sapra, B.K., 2025, Interaction of cesium compounds with abundant inorganic compounds of atmosphere: Effect on cloud formation potential and settling, Journal of Hazardous Materials, 137248.
- Chaudhry, S.K., S.N. Tripathi., Reddy, T.V.R., Kumar, A., Madhwal, S., Yadav, A.K., Pradhan, P.K., 2024, Influence of seasonal variation on spatial distribution of PM2.5 concentration using low-cost sensors, Environmental Monitoring and Assessment, 196, 1234.
- Pandey, M., Rai, P., S.N. Tripathi et al., 2024, Spatio-temporal Forecasting of PM2.5 via Spatial-Diffusion Guided Encoder-Decoder Architecture
- Jain, V., Mukherjee, A., S.N. Tripathi et al., 2024, A hybrid approach for integrating micro-satellite images and sensors network-based ground measurements using deep learning for high-resolution prediction of fine particulate matter (PM2.5) over an Indian city, Lucknow, Atmospheric Environment, 338, 120798.
- Sidyant Kumar, Sudama, S.N. Tripathi and Sanjay Kumar, 2024., Drop breakup in bag regime under the impulsive condition, Journal of Multiphase Flow, 181, 104977.
- Sahu, V., S.N. Tripathi, Sutaria, R., Dumka, N., Ghosh, K., Singh, R.K., 2024, Assessment of a clean cooking fuel distribution scheme in rural households of India – 'Pradhan Mantri Ujjwala Yojana (PMUY), 81, 101492.
- Dey, Swapnil, Arora, V. and S.N. Tripathi, 2024, Leveraging unsupervised data and domain adaptation for deep regression in low-cost sensor calibration, IEEE Transactions on Neural Networks and Learning Systems.
- Salana, S., Yu, H., Dai, Z., Subramanian, P.S.G., Puthussery, J.V., Wang, Y., Singh, A., Pope, F.D., Manuel Lieva-Guzmán, Rastogi, N., S.N. Tripathi, et al., 2024, Inter-continental variability in the relationship of oxidative potential and cytotoxicity with PM2.5 mass, Nature communication 15 (5263).
- Bhowmik, H.S., S.N. Tripathi, Joseph V. Puthussery, Vishal Verma, Jay Dave and Neeraj Rastogi, 2024, Reactive oxygen species generation from winter water-soluble organic aerosols in Delhi's PM2.5, Atmospheric Environment, 22, 100262.
- Tripathi, S.N., Yadav, S. and Sharma K., 2024, Air pollution from biomass burning in India, Environmental Research Letters.
- Liu, X., Turner, J.R., Oxford, C.R., McNeill, J., Walsh, B., Roy, E.L., Weagle, C.L., Stone, E., Zhu, H., Liu, W., Wei, Z., Hyslop, N.P., Giacomo, J., Dillner, A.M., Salam, A., Hossen, A., S. N. Tripathi et al., 2024, Elemental Characterization of Ambient Particulate Matter for a Globally Distributed Monitoring Network: Methodology and Implications, ACS Environmental Science & Technology Air.
- Bhattu, D., S. N. Tripathi, Bhowmik, H.S., et al., 2024, Local incomplete combustion emissions define the PM 2.5 oxidative, Nature Communication, 15, 3517.
- Verma. P.K., Devaprasad M., Dave. J., Meena., R., Bhowmik. H.S., S.N. Tripathi and Rostogi. N., 2024, Summertime oxidative potential of atmospheric PM2.5 over New Delhi: Effect of aerosol ageing., Science of the Total Environment, 170984, 920.
- Yadav. P., Lal. S., S.N. Tripathi, Jain. V and Mandal. T.K., 2024, Role of sources of NMVOCs in O3, OH reactivity, and Secondary Organic Aerosol Formation over Delhi., Atmospheric Pollution Research, 15, 102082.
- Ajnoti, N., Gehlot, H. and S. N. Tripathi, 2024, Hybrid Instruments Network Optimization for Air Quality Monitoring, Atmospheric Measurement Techniques, 17.
- Huang, W., Wu, C., Gao, L., Gramlich, Y., Haslett, S. L., Thornton, J., Lopez-Hilfiker, F. D., Lee, B. H., Song, J., Saathoff, H., Shen, X., Ramisetty, R., S. N. Tripathi, Ganguly, D., Jiang, F., Vallon, M., Schobesberger, S., Yli-Juuti, T., and Mohr, C., 2024, Variation in chemical composition and volatility of oxygenated organic aerosol in different rural, urban, and mountain environments, Atmospheric Chemistry and Physics, 24.
- Madhwal, S., S.N. Tripathi, Bergin, M.H., Bhave, P., B. de Foy., Reddy, T. V. R., Chaudhry, S.K., Jain, V., Garg, N and Lalwani, P., 2023, Evaluation of PM2.5 spatio-temporal variability and hotspot formation using low-cost sensors across urban-rural landscape in Lucknow, India, Atmospheric Environment, 319, 120302
- Bhowmik. H.S., S.N. Tripathi, et al., 2023, Contribution of fossil and biomass-derived secondary organic carbon to winter water-soluble organic aerosols in Delhi, India, Science of the Total Environment, 912, 167155
- Singh, A., S.N. Tripathi, et al., 2023, Wintertime Oxidation potential of PM2.5 over a big Urban city in the central Indo Gangatic Plain, Science of The Total Environment. 905, 167155
- Kohl, M., Lelieveld, J., Chowdhury, S., Ehrhart, S., Sharma, D., Cheng, Y., S.N. Tripathi, Sebastian, M., Pandithurai, G., Wang, H and Pozzer, A., 2023, Numerical simulation and evaluation of global ultrafine particle concentrations at the Earth’s surface, Atmospheric Chemistry and Physics
- Haslett, S.L., Bell, D.M., Kumar, V., Slowik, J. G., Wang, D. S., Mishra, S., Rastogi, N., Singh, A., Ganguly, D., Thornton, J., Zheng, F., Li, Y., Nie, W., Liu, Y., Ma, W., Yan, C., Kulmala, M., Daellenbach, K. R., Hadden, D., Baltensperger, U., Prevot, A. S. H., S. N. Tripathi and Mohr, C., 2023, Night time NO emissions strongly suppress chlorine and nitrate radical formation during the winter in Delhi, Atmospheric Chemistry and Physics, 23, 9023–9036
- Molina-Cuberos, G.J., Witasse, O., Toledo, D and S.N. Tripathi, 2023, The Low-Altitude Ionosphere of the Ice Giant Planets, Journal of Geophysical Research: Planets, 128, e2022JE007568
- Mishra, S., S.N. Tripathi, Kanawade, V. P., Haslett, S.L., Dada, L., Ciarelli, G., Kumar, V., Singh, A., Bhattu, D., Rastogi, N., Daellenbach, K.R., Ganguly, D., Gargava,P., Slowik, J.G., Kulmala, M., Mohr, C., Imad El-Haddad and Prevot, A.S.H., 2023, Rapid night-time nanoparticle growth in Delhi driven by biomass-burning emissions, Nature geoscience, 16, 224–230
- Jain, V., S.N. Tripathi, Tripathi, N., Gupta, M., Sahu, L.K., Murari, V., Gaddamidi, S., Shukla, A.K and Prevot, A.S.H., 2023, Real-time measurements of NMVOCs in the central IGB, Lucknow, India: Source characterization and their role in O3 and SOA formation, Atmospheric Chemistry and Physics
- Ghosh, S., Dey, S., Das, S., Riemer, N., Giuliani, G., Ganguly, D., Venkataraman, C., Giorgi, F., S.N. Tripathi, Ramachandran, S., Rajesh, T. A., Gadhavi, H., and Srivastava, A. K., 2023, Towards an improved representation of carbonaceous aerosols over the Indian monsoon region in a regional climate model: RegCM, Geoscientific Model Development, 16, 1–15
- Mukherjee, A., S.N. Tripathi, Kirpa, R. and Saha, D., 2022, New Delhi air potentially chokes from groundwater conservation policies in adjoining regions, Environmental Science & Technology Letters, 10, 3-5
- Khatri., P., Hayasaka, T., Holben, B.N., Singh, R.P., Letu, H and S.N. Tripathi, 2022, Increased aerosols can reverse Twomey effect in water clouds through radiative pathway, Scientific Reports, 12, 20666
- Sreekanth, V., Ajay, R., Padmavati, K., Puttaswamy, N., Prabhu, V., Agrawal, P., Upadhya, A., Rao, S., Sutaria, R., Suman, M., Dey, S., Khaiwal, R., Balakrishnan, K., S.N. Tripathi and Singh, P, 2022, Inter-versus Intra-city variation in the performance and calibration of low-cost PM2.5 sensor: A Multicity assessment in India, ACS Earth and Space Chemistry, 6, 3007-3016
- Shukla, A.K., S.N. Tripathi, Canonaco, F., Lalchandani, V., Sahu, R., Srivastava, D, Dave, J., Thamban, M. N., Gaddamidi, S., Sahu, L., Kumar, M., Singh, V and Rastogi, N., 2022, Spatio-temporal variation of C-PM2.5 (composition based PM2.5) sources using PMF*PMF (double-PMF) and single- combined PMF technique on real-time non-refractory, BC and elemental measurements during post-monsoon and winter at two sites in Delhi, India, Atmospheric Environment, 293, 119456
- Puthussery, J.V., Dave, J., Shukla, A., Gaddamidi, S., Singh, A., Vats, P., Salana, S., Ganguly, D., Rastogi, N., S.N. Tripathi and Verma V., 2022, Effect of biomass burning, Diwali fireworks, and polluted fog events on the oxidative potential of fine ambient particulate matter in Delhi, India, Environmental Science & Technology, 56, 14605-14616
- Bhowmik, H.S., S. N. Tripathi., Sahu, R., Shukla, A.K., Lalchandani, V., Talukdar, S., Tripathi, N and Sahu L., 2022, Insights into the regional transport and local formation of Secondary Organic Aerosol in Delhi, India, Aerosol and Air Quality Research, 22, 220113
- Tripathi, N., Sahu, L.K., S.N. Tripathi, 2022, Characteristics of VOC composition at urban and suburban sites of New Delhi, India in winter, Journal of Geophysical Research
- Manchanda. C., Kumar, M., Singh, V., Hazarika, N., Faisal, M., Lalchandani, V., Shukla, A., Dave, J., Rastogi, N and S.N. Tripathi, 2022, Chemical speciation and source apportionment of ambient PM2.5 in New Delhi before, during, and after the Diwali fireworks, Atmospheric Pollution Research, 13, 101428
- Jain, V., S. N. Tripathi., Tripathi, N., Sahu, L., Gaddamidi, S., Kumar Shukla, A.S., Bhattu, D and Ganguly, D, 2022, Seasonal variability and source apportionment of non-methane VOCs using PTR-TOF-MS measurements in Delhi, India, Atmospheric Environment, 283
- Kumar, S., Mishra, G., Kumar, M., Saud, T., Dwivedi, A.K., Kumar, S and S.N. Tripathi, 2022, Response of PDPA to optical materials and thickness of test section window, Measurements, 197
- Kumar, V., Giannoukos, S., S.N. Tripathi., et al., 2022, Real-time chemical speciation and source apportionment of organic aerosol components in Delhi, India, using extractive electrospray ionization mass spectrometry, Atmospheric Chemistry and Physics
- Bhowmik, H. S., Shukla, A., Lalchandani, V., S.N. Tripathi et al., 2022, Inter-comparison of online and offline methods for measuring ambient heavy and trace elements and water-soluble inorganic ions (NO3−, SO42−, NH4+ and Cl−) in PM2.5 over a heavily polluted megacity, Delhi, Atmospheric Measurement Techniques, 15, 2667–2684
- Mariam., Joshi, M., Khan, A., Mishra, G., S.N. Tripathi and Sapra, B.K., 2022, Experimental estimates of hygroscopic growth of particulate fission product species (mixed Csl-CsOH) with implications in reactor accident safety research, Progress in Nuclear Energy, 148, 104216
- Yadav, K., S. N. Tripathi et al., 2022, Few-shot calibration of low-cost air pollution (PM2.5) sensors using meta-learning, IEEE Sensors Letters, 6 (5), IEEE Sensors Letters.
- Sarangi, C., Chakraborty, T.C., S.N. Tripathi et al., 2022, Observations of aerosol–vapor pressure deficit–evaporative fraction coupling over India, Atmospheric Chemistry and Physics, 22, 3615–3629
- Yadav, Shweta, S.N. Tripathi et al., 2022, Current status of Source apportionment of Ambient Aerosols in India, Atmospheric Environment
- Khatri, P., Hayasaka, T., Holben, B., S.N. Tripathi., Misra, P., Patra, P.K., Hayashida, S and Dumka U.C., 2021, Aerosol loading and radiation budget perturbations in densely populated and highly polluted Indo-Gangetic Plain by COVID-19: Influences on cloud properties and air temperature. Geophysical Research Letters, 48
- Lalchandani, V., D. Srivastava, S.N. Tripathi et al., 2021, Effect of biomass burning on the PM2.5 composition and secondary aerosol formation during post-monsoon and winter haze episodes in Delhi, Journal of Geophysical Research - Atmospheres, 127
- Jangid, Manish, Amit K. Mishra, S.N. Tripathi et al., 2021, Observation of aerosol induced ‘lower tropospheric cooling’ over Indian core monsoon region, Environmental Research Letters, 16, 124057
- Talukdar, S., S.N. Tripathi et al., 2021, Air Pollution in New Delhi during Late Winter: An Overview of a Group of Campaign Studies Focusing on Composition and Sources, Atmosphere, 12, 1432
- Ginn, O., S.N. Tripathi et al., 2021, Detection and quantification of enteric pathogens in aerosols near open waste water canals in cities with poor sanitation, Environmental Science and Technology, 55, 14758-14771
- Khattri, P., S.N. Tripathi et al., 2021, Aerosol Loading and Radiation Budget Perturbations in Densely Populated and Highly Polluted Indo-Gangetic Plain by COVID-19: Influences on Cloud Properties and Air Temperature, Geophysical Research Letters, 48
- Jha, S.K., Mohit Kumar, S.N. Tripathi, et al., 2021, Domain adaptation based deep calibration of low-cost PM2.5 sensors, IEEE Sensor Journal
- Thamban, N., S.N. Tripathi et al., 2021, Evolution of size and composition of fine particulate matter in the Delhi megacity during later winter, Atmospheric Environment, 207, 118752
- Niranjan, R., K.P. Mishra, S.N. Tripathi and A.K. Thakur, 2021, Proliferation of lung Epithelial cells is regulated by the mechanisms of autophagy upon exposure of soots, Frontiers in Cell and Developmental Biology, 9:662597
- Shukla, A.K., V. Lalchandani, S.N. Tripathi et al., 2021, Real-time quantification and source apportionment of fine particulate matter including organics and elements in Delhi during summertime, Atmospheric Environment, 261, 118598
- Rastogi, N., Rangu Satish, S.N. Tripathi et al., 2021, Diurnal variability in the spectral characteristics and sources of water-soluble brown carbon aerosols over Delhi, Science of the Total Environment, 794, 148589
- Kumar, P., S.S. Rajput, S.N. Tripathi, et al., 2021, Source apportionment and health impacts of fine particulate matter (PM2.5) in an urban site of India, International Journal of Environmental Research and Public Health, 18, 9159
- S.R. Gaddamidi, M. Mishra, S.N. Tripathi, et al., 2021, Brown Carbon in Ambient Fine Particulate Matter: Sources, Characteristics, and Health Impacts, Journal of Hazardous Materials, 418
- Singh, R., S.N. Tripathi and D.D. Kumar, 2020, Unraveling chemical composition of PM2.5 through PMF and other multivariate techniques, Aerosol and Air Quality Research, 20, 1878–1889
- Mishra, G., K. Ghosh, S.N. Tripathi et al., 2021, An application of probability density function for the analysis of PM2.5 concentration during the COVID-19 lockdown period, Science of the Total Environment, 782, 146681
- Vohra, Karn, S.N. Tripathi et al., 2021, Long-term trends in air quality in major cities in the UK and India: A view from space, Atmospheric Chemistry and Physics, 21, 6275-6296
- Singh, Atinderpal, Neeraj Rastogi, S.N. Tripathi et al., 2021, Sources and characteristics of light absorbing fine particulates over Delhi through the synergy of real-time optical and chemical measurements, Atmospheric Environment, 252, 118338
- Ram, K., Thakur, R.C., S.N. Tripathi et al., 2021, Why airborne transmission hasn’t been conclusive in case of COVID-19? An atmospheric science perspective, Science of the Total Environment, 773, 145525
- Lalchandani, V., V. Verma, S.N. Tripathi et al., 2021, Real-time characterization and source apportionment of fine particulate matter in the Delhi megacity area during late winter, Science of the Total Environment, 770, 145324
- Upadhyaya, D., J. Evans, S.N. Tripathi et al., 2021, The Indian COSMOS Network (ICON): validating remotely sensed and modelled soil moisture data products, Remote Sensing, 13(3), 537
- Ginn, O., D. Berendes, S.N. Tripathi et al., 2021, Open waste canals as potential sources of antimicrobial resistance genes in aerosols in urban Kanpur, India, American Journal of Tropical Medicine & Hygiene, 104(5), 1761-1767
- Rai, P., S.N. Tripathi et al., 2021, Highly time-resolved measurements of element concentrations in PM10 and PM2.5: Comparison of Delhi, Beijing, London, and Krakow, Atmospheric Chemistry and Physics, 21, 717–730
- Bhowmik, H.S., S. Naresh, S.N. Tripathi et al., 2021, Temporal and spatial variability of carbonaceous species (EC; OC; WSOC and SOA) in PM2.5 aerosol over five sites of Indo-Gangetic Plain, Atmospheric Pollution Research, 12, 375-390
- Goel, V., S.N. Tripathi et al., 2020, Variations in black carbon concentration and sources during COVID-19 lockdown in Delhi, Chemosphere, 270, 129435
- Choudhury, G., S.N. Tripathi et al., 2020, Aerosol-enhanced high precipitation events near the Himalayan foothills, Atmospheric Chemistry and Physics, 20, 15389-15399
- Sahu, R., S.N. Tripathi et al., 2020, Robust statistical calibration and characterization of portable low-cost air quality monitoring sensors to quantify real-time O3 and NO2 concentrations in diverse environments, Atmospheric Measurement Techniques, 14, 37-52
- McNeill, J., S.N. Tripathi et al., 2020, Large global variations in measured airborne metal concentrations driven by anthropogenic sources, Scientific Reports, 10, Article number: 21817
- Gautam, A.S., S.N. Tripathi et al., 2020, First surface measurement of variation of Cloud Condensation Nuclei (CCN) concentration over the Pristine Himalayan region of Garhwal, Uttarakhand, India, Atmospheric Environment, 246, 118123
- Tobler, A., S.N. Tripathi et al., 2020, Chemical characterization of PM2.5 and source apportionment of organic aerosol in New Delhi, India, Science of the Total Environment, 745, 140924
- Johnson, A., J.M. Brown, O. Ginn, S.N. Tripathi et al., 2020, Extended-spectrum beta-lactamase (ESBL)-positive Escherichia coli presence in urban aquatic environments in Kanpur, India, Journal of Water and Health, 18(5), 849–854
- Sembhi, H., M. Wooster, S.N. Tripathi et al., 2020, Post-monsoon air quality degradation across Northern India: assessing the impact of policy-related shifts in timing and amount of crop residue burnt, Environmental Research Letters, 15, 104067
- Wang, L., Jay G. Slowik, S.N. Tripathi et al., 2020, Source characterization of volatile organic compounds measured by PTR-ToF-MS in Delhi, India, Atmospheric Chemistry and Physics, 20, 9753-9770
- Rai, P., Markus Furger, S.N. Tripathi et al., 2020, Real-time measurement and source apportionment of elements in Delhi's atmosphere, Science of the Total Environment, 741, 140332
- Puthussery, J., A. Singh, S.N. Tripathi et al., 2020, Real-time measurements of PM2.5 oxidative potential using dithiothreitol (DTT) assay in Delhi, India, Environmental Science & Technology Letters, 7, 504-510
- Singh, R.K. and S.N. Tripathi, 2020, Application of National Aerosol Facility (NAF) in designing of a ventilation system for isolation rooms to minimize interpersonal exposure of sneezing/coughing, Transactions of the Indian National Academy of Engineering
- Kanawade, V.P., S.N. Tripathi et al., 2020, Chemical characterisation of sub–micron aerosols during new particle formation in an urban atmosphere, Aerosol and Air Quality Research, 20: 1294–1305.
- Dwivedi, A.K., Manish Kumar, S.N. Tripathi et al., 2020, Optimization of controlling parameters of plasma torch aerosol generator and characteristics of synthesized metal oxide aerosols in context of NAF program, Progress in Nuclear Energy, 123, 103311
- Sahu, R., Kuldeep K. Dixit, S.N. Tripathi et al., 2020, Validation of low-cost sensors in measuring real-time PM10 concentration at two sites in Delhi national capital region, Sensors, 20, 1347
- Mishra, G., S.N. Tripathi et al., 2020, Study on CCN activity of fission product aerosols (CsI and CsOH) and their effect on size and other properties, Atmospheric Research, 236, 104816
- Mandariya, A.K., S.N. Tripathi et al., 2020, Wintertime hygroscopic growth factors (HGFs) of accumulation mode particles and their linkage to chemical composition in a heavily polluted urban atmosphere of Kanpur at the centre of IGP, India: Impact of ambient relative humidity, Science of the Total Environment, 704, 135363
- Bhat, G.S., S.N. Tripathi et al., 2019, Spatial and temporal variability in energy and water vapor fluxes observed at seven sites on the Indian subcontinent during 2017, Quarterly Journal of the Royal Meteorological Society, 1-14
- Ghosh, K., S.N. Tripathi et al., 2019, Particle formation from vapors emitted from glowing wires: Theory and experiments, Aerosol Science & Technology, 54(3), 243-261
- Zheng, T., S.N. Tripathi et al., 2019, Gaussian Process regression model for dynamically calibrating and surveilling a wireless low-cost particulate matter sensor network in Delhi, Atmospheric Measurement and Techniques, 12(9), 5161–5181
- Brauer, M., S.K. Guttikunda, S.N. Tripathi et al., 2019, Examination of monitoring approaches for ambient air pollution: A case study for India, Atmospheric Environment, 216, 116940
- Turner, A., S.N. Tripathi et al., 2019, Interaction of convective organisation with monsoon precipitation, atmosphere, surface and sea: The 2016 INCOMPASS field campaign in India, Quarterly Journal of the Royal Meteorological Society, 146, 2828-2852
- Choudhury, G., Bhishma Tyagi, S.N. Tripathi et al., 2019, Aerosol-orography-precipitation - A critical assessment, Atmospheric Environment, 214, 116831
- Brattich, E., E. Serranocastillo, S.N. Tripathi et al., 2019, Measurements of aerosols and charged particles on the BEXUS18 stratospheric balloon, Annales Geophysicae, 37, 389-403
- Dwivedi, A.K., A. Khan, S.N. Tripathi et al., 2019, Aerosol depositional characteristics in piping assembly under varying flow conditions, Progress in Nuclear Energy, 116, 148-157
- Thamban, N.M., B. Joshi, S.N. Tripathi et al., 2019, Evolution of aerosol size and composition in the Indo-Gangetic plain: Size-resolved analysis of high-resolution aerosol mass spectra, ACS Earth and Space Chemistry, 3, 823-832
- Mishra, G., A.K. Mandariya, S.N. Tripathi et al., 2019, Hygroscopic growth of CsI and CsOH particles in context of nuclear reactor accident research, Journal of Aerosol Science, 132, 60-69
- Mandariya, A.K., T. Gupta and S.N. Tripathi, 2019, Effect of aqueous-phase processing on the formation and evolution of Organic Aerosol (OA) under different stages of fog life cycles, Atmospheric Environment, 206, 60-71
- Zhang, S.Y., S.N. Tripathi et al., 2019, Intensive allochthonous inputs along the Ganges River and their effect on microbial community composition and dynamics, Environmental Microbiology, 21(1), 182-196
- Weagle, C.L., G. Snider, S.N. Tripathi et al., 2018, Global sources of fine particulate matter: Interpretation of PM2.5 chemical composition observed by SPARTAN using a global chemical transport model, Environmental Science & Technology, 52 (20), 11670-11681
- Sarangi, C., V.P. Kanawade, S.N. Tripathi et al., 2018, Aerosol-induced intensification of cooling effect of clouds during Indian summer monsoon, Nature Communication, 9, 3754
- Zheng, T., S.N. Tripathi et al., 2018, Field evaluation of low-cost particulate matter sensors in high and low concentration environments, Atmospheric Measurement Techniques, 11(8), 4823–4846
- Chakraborty, T., C. Sarangi, S.N. Tripathi et al., 2018, Biases in model-simulated surface energy fluxes during the Indian monsoon onset period, Boundary-Layer Meteorology, 170(2), 323-348
- Trent, M., R. Dreibelbis, A. Bir, S.N. Tripathi et al., 2018, Access to household water quality information leads to safer water: A cluster randomized controlled trial in India, Environmental Science & Technology, 52(9), 5319-5329
- Sarangi, C., S. N. Tripathi et al., 2018, Aerosol and urban land use effect on rainfall around cities in Indo-Gangetic Basin from observations and cloud resolving model simulations, Journal of Geophysical Research – Atmospheres, 123, 3645-3667
- George, G., C. Sarangi, S.N. Tripathi, T. Chakraborty and A. Turner, 2018, Vertical structure and radiative forcing of monsoon clouds over Kanpur during the 2016 INCOMPASS field campaign, Journal of Geophysical Research – Atmospheres, 123, 2152-2174
- Chakraborty, A., S.N. Tripathi et al., 2018, Realtime chemical characterization of post monsoon organic aerosols in a polluted urban city: sources, composition, and comparison with other seasons, Environmental Pollution, 232, 310-321
- Shamjad, P.M., S.N. Tripathi et al., 2018, Absorbing refractive index and direct radiative forcing of atmospheric brown carbon over Gangetic Plain, ACS Earth and Space Chemistry, 2(1), 31-37
- Holben, B.N., S.N. Tripathi et al., 2018, An overview of mesoscale aerosol processes, comparison and validation studies from DRAGON networks, Atmospheric Chemistry and Physics, 18, 655-671
- Mhawish, A., T. Banerjee, D.M. Broday, A. Misra and S.N. Tripathi, 2017, Evaluation of MODIS collection 6 aerosol retrieval algorithms over Indo-Gangetic Plain: Implications of aerosols types and mass loading, Remote Sensing of Environment, 201, 297-313
- Thamban, N.M., S.N. Tripathi et al., 2017, Internally mixed black carbon in the Indo- Gangetic Plain and its effect on absorption enhancement, Atmospheric Research, 197,211-223
- Lal, S., S. Venkataramani, S.N. Tripathi et al., 2017, Loss of crop yields in India due to surface ozone: An estimation based on a network of observations, Environmental Science and Pollution Research, 24(26), 20972-20981
- Mishra, S.K., N. Saha, S.N. Tripathi et al., 2017, Morphology, mineralogy and mixing of individual atmospheric particles over Kanpur (IGP): Relevance of homogeneous equivalent sphere approximation in radiative models, MAPAN-Journal of Metrology Society of India, 32(3), 229-241
- Satish, R., P. Shamjad, N. Thamban, S.N. Tripathi and N. Rastogi, 2017, Temporal characteristics of brown carbon over the central Indo-Gangetic Plain, Environmental Science & Technology, 51(12), 6765–6772
- Chowdhury, S., S. Dey, S.N. Tripathi et al., 2017, “Traffic intervention” policy fails to mitigate air pollution in megacity Delhi, Environmental Science & Policy, 74, 8-13 intervention policy fails to mitigate air pollution in megacity Delhi
- Sarangi, C., S.N. Tripathi et al., 2017, Investigation of aerosol-cloud-rainfall association over Indian Summer Monsoon region, Atmospheric Chemistry and Physics, 17, 5185–5204
- Dimri, A.P., S.N. Tripathi et al., 2017, Cloudbursts in Indian Himalayas: A review, Earth Science Reviews, 168, 1-23
- Yu, H., L. Dai, Y. Zhao, V.P. Kanawade, S.N. Tripathi et al., 2017, Laboratory observations of temperature and humidity dependencies of nucleation and growth rates of sub-3 nm particles, Journal of Geophysical Research - Atmospheres, 122(3), 1919- 1929
- Soni, P., S.N. Tripathi and R. Srivastava, 2017, Radiative effects of black carbon aerosols on Indian monsoon: A study using WRF-Chem model, Theoretical and Applied Climatology, 132(1-2), 115134
- Vohra, K., K. Ghosh, S.N. Tripathi et al., 2017, Submicron particle dynamics for different surfaces under quiescent and turbulent conditions, Atmospheric Environment, 152, 330-344
- Chakraborty, A, S.N. Tripathi and T. Gupta, 2017, Effect of organic aerosol loading and fog processing on organic aerosol volatility, Journal of Aerosol Science, 105, 73- 83
- Ghosh, K., S.N. Tripathi et al., 2017, Modeling studies on coagulation of charged particles and comparison with experiment, Journal of Aerosol Science, 105, 35-47
- Chakraborty, T., C. Sarangi and S.N. Tripathi, 2016, Understanding diurnality and inter-seasonality of a sub-tropical urban heat-island, Boundary-Layer Meteorology, 163(2), 287-309
- RShamjad, P.M., S.N. Tripathi, N. Thamban and V. Heidi, 2016, Refractive index and absorption attribution of highly absorbing brown carbon aerosols from an Urban Indian City-Kanpur, Scientific Reports, 6, 37735
- Cardnell, S., S.N. Tripathi et al., 2016, A photochemical model of the dust-loaded ionosphere of Mars, Journal of Geophysical Research–Planets, 121(11), 2335-2348
- Sen, I.S., S.N. Tripathi, et al., 2016, Emerging Airborne Contaminants in India: Platinum group elements from catalytic converters in motor vehicles, Applied Geochemistry, 75, 100-106
- Vreeland, H., J.J. Schauer, A.G. Russell, S.N. Tripathi et al., 2016, Chemical characterization and toxicity of particulate matter emissions from roadside trash combustion in urban India, Atmospheric Environment, 147, 22-30
- Lal, R. M., A. Nagpure, L. Luo, S.N. Tripathi, et al., 2016, Municipal solid waste and dung cake burning: Discoloring the Taj Mahal and human health impacts in Agra, Environmental Research Letters, 11, 104009
- Kumar, B., A. Chakraborty, S.N. Tripathi and D. Bhattu, 2016, Highly time resolved chemical characterization of submicron organic aerosols at a polluted urban location, Environmental Science: Processes & Impacts, 18, 1285-1296
- Chakraborty, A., S.N. Tripathi and T. Gupta, 2016, Combined effects of organic aerosol loading and fog processing on organic aerosols oxidation, composition, and evolution, Science of the Total Environment, 573, 690-698
- Bhattu, D., S.N. Tripathi and A. Chakraborty, 2016, Deriving aerosol hygroscopic mixing state from size-resolved CCN activity and HR-ToF-AMS measurements, Atmospheric Environment, 142, 5770
- Misra, A., V.P. Kanawade, and S.N. Tripathi, 2016, Quantitative assessment of AOD from 17 CMIP5 models based on satellite derived AOD over India, Annales Geophysicae, 34, 657-671
- Snider, G., S.N. Tripathi et al., 2016, Variation in global chemical composition of PM2.5: Emerging results from SPARTAN, Atmospheric Chemistry and Physics, 16, 9629-9653 Variation in global chemical composition of PM2.5: Emerging results from SPARTAN
- Sarangi, C., S.N. Tripathi, A.K, Mishra et al., 2016, Elevated aerosol layers and their radiative impact over Kanpur during monsoon onset period, Journal of Geophysical Research–Atmospheres, 121, 7936-7957
- Chakraborty, A., T. Gupta and S.N. Tripathi, 2016, Chemical composition and characteristics of ambient aerosols and rainwater residues during Indian summer monsoon: Insight from aerosol mass spectrometry, Atmospheric Environment, 136, 144-155
- Chakraborty, A., B. Ervens, T. Gupta and S.N. Tripathi, 2016, Characterization of organic residues of size-resolved fog droplets and their atmospheric implications, Journal of Geophysical Research, 121, 4317-4332s
- Harrison, R.G., S.N. Tripathi et al., 2016, Applications of electrified dust and dust devil electrodynamics to Martian atmospheric electricity, Space Science Reviews, 203(1-4), 299-345
- DKumar, N., S.N. Tripathi et al., 2016, Delhi’s air pollution (Re) distribution and air quality regulations, Environmental Policy and Law, 46(1), 77-86,
- Sen, I.S., M. Bizimis, S.N. Tripathi and D. Paul, 2016, Lead isotopic fingerprinting of aerosols to characterize the sources of atmospheric lead in an industrial city of India, Atmospheric Environment, 129, 27–33
- Ram, K., S. Singh, M.M. Sarin, A.K. Srivastava and S.N. Tripathi, 2016, Variability in aerosol optical properties over an urban site, Kanpur, in the Indo-Gangetic Plain: A case study of haze and dust events, Atmospheric Research, 174-175, 52-61
- Tiwari, S., P. K. Hopke, D. Thimmaiah, S.N. Tripathi et al., 2016, Nature and sources of ionic species in precipitation across the Indo-Gangetic Plains, India, Aerosol and Air Quality Research, 16(4), 943957
- Arola, A., S.N. Tripathi et al., 2015, Direct radiative effect by brown carbon over Indo- Gangetic Plain, Atmospheric Chemistry and Physics, 15(22), 12731-12740
- Sarangi, C., S.N. Tripathi, S. Tripathi and M.C. Barth, 2015, Aerosol-cloud associations over Gangetic Basin during a typical monsoon depression event using WRF-Chem simulation, Journal of Geophysical Research - Atmospheres, 120(20), 10974-10995
- Shamjad, P.M., S.N. Tripathi et al., 2015, Contribution of brown carbon to direct radiative forcing over the Indo-Gangetic Plain, Environmental Science & Technology, 49 (17), 10474-10481
- Lalchandani, V., S.N. Tripathi, N. Ramanathan et al., 2015, Recommendations for calibration factors for a photo-reference method for aerosol black carbon concentrations, Atmospheric Pollution Research, 7(1), 75-81
- Chakraborty, A., D. Bhattu, T. Gupta, S.N. Tripathi and M. Canagaratna, 2015, Real- time measurements of ambient aerosols in a polluted Indian city: sources, characteristics and processing of organic aerosols during foggy and non-foggy periods, Journal of Geophysical Research – Atmospheres, 120(17), 9006- 9019
- Kamra, A.K., Singh, D., S.N. Tripathi et al., 2015, Atmospheric ions and new particle formation events at a tropical location, Pune, India, Quarterly Journal of Royal Meteorological Society, 141, 3140-3156a
- Chaudhuri, C., S.N. Tripathi, R. Srivastava and A. Misra, 2015, Observation- and numerical- analysis based dynamics of the Uttarkashi cloudburst, Annales Geophysicae, 33(6), 671-686,
- Patange, O.S., N. Ramanathan, S.N. Tripathi et al., 2015, Reductions in indoor black carbon concentrations from improved biomass stoves in rural India, Environmental Science & Technology, 49(7), 4749-4756
- Snider, G., C.L. Weagle, R.V. Martin, S.N. Tripathi et al., 2015, SPARTAN: a global network to evaluate and enhance satellite-based estimates of ground-level particulate matter for global health applications, Atmospheric Measurement Techniques, 8(1), 505-521
- Bhattu, D. and S.N. Tripathi, 2015, CCN closure study: effects of aerosol chemical composition and mixing state, Journal of Geophysical Research-Atmospheres, 120, 766-783
- Bergin, M.H., S.N. Tripathi et al., 2015, The discoloration of the TajMahal due to particulate carbon and dust deposition, Environmental Science & Technology, 49 (2), 808-812
- Villalobos, A.M., S.N. Tripathi et al., 2015, Source apportionment of carbonaceous fine particulate matter (PM2.5) in two contrasting cities across the Indo-Gangetic Plain, Atmospheric Pollution Research, 6(3), 398-405
- Gaur, A., S.N. Tripathi et al., 2014, Four-year measurements of trace gases (SO2, NOx, CO, and O3) at an urban location, Kanpur, in Northern India, Journal of Atmospheric Chemistry, 71(4), 283-301
- Dumka, U.C., Bhattu, D., S.N. Tripathi et al., 2014, Seasonal in homogeneity in cloud precursors over Gangetic Himalayan region during GVAX campaign, Atmospheric Research, 155, 158-175
- Kedia, S., S.N. Tripathi et al., 2014, Quantification of aerosol type, and sources of aerosols over the Indo-Gangetic Plain, Atmospheric Environment, 98, 607-619
- Misra, A., A. Gaur, S.N. Tripathi et al., 2014, An overview of the physico-chemical characteristics of dust at Kanpur in the central Indo-Gangetic Basin, Atmospheric Environment, 97, 386-396
- Kanawade, V.P., S.N. Tripathi, et al., 2014, Observations of new particle formation at two distinct Indian subcontinental urban locations, Atmospheric Environment, 90, 370- 379
- Huttunen, J., S.N. Tripathi et al., 2014, Effect of water vapour on the determination of Aerosol Direct Radiative Effect based on the AERONET fluxes, Atmospheric Chemistry and Physics, 14(12), 61036110
- Kanawade, V.P., S.N. Tripathi, D. Bhattu and P.M. Shamjad, 2014, Sub-micron particle number size distributions characteristics at an urban location, Kanpur, in the Indo-Gangetic Plain, Atmospheric Research, 147-148, 121-132
- Mishra, A., M. Michael, S.N. Tripathi, C. Béghin, 2014, Revisited modeling of Titan's middle atmosphere electrical conductivity, Icarus, 238, 230-234
- Dumka, U.C., S.N. Tripathi, A. Misra, D.M. Giles, T.F. Eck, R. Sagar and B.N. Holben, 2014, Latitudinal variation of aerosol properties from Indo Gangetic Plain (IGP) to central Himalayan foothills during TIGERZ campaign, Journal of Geophysical Research-Atmospheres, 119, 4750-4769
- Ram, K., S.N. Tripathi, M.M. Sarin and D. Bhattu, 2014, Primary and secondary aerosols from an urban site (Kanpur) in the Indo-Gangetic Plain: Influence on CCN, CN concentrations and optical properties, Atmospheric Environment, 89, 655-663
- Kaul, D.S., T. Gupta and S.N. Tripathi, 2014, Source apportionment for water soluble organic matter of submicron aerosol: A comparison between foggy and nonfoggy episodes, Aerosol and Air Quality Research, 14, 1527-1533
- Bhattu, D. and S.N. Tripathi, 2014, Inter-seasonal variability in size-resolved CCN properties at Kanpur, India, Atmospheric Environment, 85, 161-168
- Ghosh, S. and S.N. Tripathi et al., 2014, Chemical characterization of summertime dust events at Kanpur: Insight into the sources and level of mixing with anthropogenic emissions, Aerosol and Air Quality Research, 14, 879-891
- Renard, J.B., S.N. Tripathi et al., 2013, In situ detection of electrified aerosols in the upper troposphere and stratosphere, Atmospheric Chemistry and Physics, 13, 1-8
- Arola, A., T.F. Eck, S.N. Tripathi et al., 2013, Influence of observed diurnal cycles of aerosol optical depth on aerosol direct radiative effect, Atmospheric Chemistry and Physics, 13, 7895-7901
- Srivastava, M., S.N. Tripathi, D. Bhattu, et al., 2013, CCN closure results from Indian Continental Tropical Convergence Zone (CTCZ) Aircraft experiment, Atmospheric Research,132-133, 322-331
- Kaskaoutis, D.G., S.N. Tripathi et al., 2013, Aerosol properties and radiative forcing over Kanpur during severe aerosol loading conditions, Atmospheric Environment, 79, 7-19
- Rawal, A., S.N. Tripathi et al., 2013, Quantifying the importance of galactic cosmic rays in cloud microphysical processes, Journal of Atmospheric and Solar-Terrestrial Physics, 102, 243-251
- Devi, J.J., T. Gupta, R. Jat and S.N. Tripathi, 2013, Measurement of personal and integrated exposure to particulate matter and co-pollutant gases: A panel study, Environmental Science and Pollution Research, 20(3), 1632-1648
- Joshi, M., B.K. Sapra, A. Khan, S.N. Tripathi, P.M. Shamjad, T. Gupta, Y.S. Mayya, 2012, Harmonisation of nanoparticle concentration measurements using GRIMM and TSI scanning mobility particle sizers, Journal of Nanoparticle Research, 14(12), 1-14
- Choudhry, P., A. Misra and S.N. Tripathi, 2012, Study of MODIS derived AOD at three different locations in the Indo Gangetic plain: Kanpur, Gandhi College and Nainital, Annales Geophysicae, 30, 1479-1493
- Dey, S., L.D. Girolamo, A.V. Donkelaar, S.N. Tripathi et al., 2012, Variability of outdoor fine particulate (PM2.5) concentration in the Indian Subcontinent: A remote sensing approach, Remote Sensing of Environment, 127, 153-161
- Sawamura, P., S.N. Tripathi et al., 2012, Stratospheric AOD after the 2011 eruption of Nabro volcano measured by lidar over the northern hemisphere, Environmental Research Letters, 7(3), 034013
- Shamjad, P.M., S.N. Tripathi, S.G. Aggarwal, et al., 2012, Comparison of experimental and modeled absorption enhancement by Black Carbon (BC) cored polydisperse aerosols under hygroscopic conditions, Environmental Science & Technology, 46(15), 8082-8089
- Banerjee, S., S.N. Tripathi, U. Das et al., 2012, Enhanced persistence of fog under illumination for carbon nanotube fog condensation nuclei, Journal of Applied Physics, 112(2), 024901
- Kaskaoutis, D.G., R.P. Singh, R. Gautam, M. Sharma, P.G. Kosmopoulos and S.N. Tripathi, 2012, Variability and trends of aerosol properties over Kanpur, northern India using AERONET data (2001– 10), Environmental Research Letters, 7(2), 024003,
- Mishra S.K., S.N. Tripathi, S, G Aggarwal and A. Arola, 2012, Optical properties of accumulation mode, polluted mineral dust: Effects of particle shape, hematite content and semi-external mixing with carbonaceous species, TellusB: Chemical and Physical Meteorology, 64(1), 18536
- Misra, A., S.N. Tripathi, D.S. Kaul and E.J. Welton, 2012, Study of MPLNET-derived aerosol climatology over Kanpur, India, and validation of CALIPSO level 2 version 3 backscatter and extinction products, Journal of Atmospheric and Oceanic Technology, 29(9), 1285-1294
- Patidar, V., S.N. Tripathi, P.K. Bharti and T. Gupta, 2012, First surface measurement of cloud condensation nuclei over Kanpur, IGP: Role of long range transport, Aerosol Science and Technology, 46, 973-982
- Eck, T.F., S.N. Tripathi et al., 2012, Fog and cloud induced aerosol modification observed by the Aerosol Robotic Network (AERONET), Journal of Geophysical Research, 117
- Srivastava, A.K., S.N. Tripathi, S. Dey, V.P. Kanawade and S. Tiwari, 2012, Inferring aerosol types over the Indo-Gangetic basin from ground based Sunphotometer measurements, Atmospheric Research, 109, 64-75
- Ram, K., M.M. Sarin and S.N. Tripathi, 2012, Temporal trends in atmospheric PM2.5, PM10, elemental carbon, organic carbon, water-soluble organic carbon, and optical properties: Impact of biomass burning emissions in the Indo-Gangetic plain, Environmental Science & Technology, 46(2), 686-695
- Devi, J.J., S.N. Tripathi et al., 2011, Observation-based 3D-view of aerosol radiative properties over Indian Continental Tropical Convergence Zone: Implications to regional climate, Tellus, 63B, 971-989
- Kaul, D.S., T. Gupta, S.N. Tripathi, V. Tare, J.L. Collett Jr., 2011, Secondary organic aerosol: A comparison between foggy and nonfoggy days, Environmental Science & Technology, 45(17), 7307-7313
- Giles, D. M., B.N. Holben, S.N. Tripathi et al., 2011, Aerosol properties over the Indo-Gangetic plain: A mesoscale perspective from the TIGERZ experiment, Journal of Geophysical Research, 116, D18203
- Srivastava, A. K., S.N. Tripathi et al., 2011, Pre-monsoon aerosol characteristics over the Indo-Gangetic Basin: Implications to climatic impact, Annales Geophysicae, 29, 789-804
- Kanawade, V.P., S.N. Tripathi et al., 2011, Isoprene suppression of new particle formation in mixed deciduous forest, Atmospheric Chemistry and Physics, 11(12), 6013-6027
- Fatima, H., S.N. Tripathi et al., 2011, On radiative forcing of sulphate aerosol produced from ion promoted nucleation mechanisms in an atmospheric global model, Meteorology and Atmospheric Physics, 112(3-4), 101-115
- Dumka, U.C., K. Krishna Moorthy, S.N. Tripathi, P. Hegde and R. Sagar, 2011, Altitude variation of aerosol properties over the Himalayan range inferred from spatial measurements, Journal of Atmospheric and Solar-Terrestrial Physics, 73, 1747-1761
- Michael, M., S.N. Tripathi, P. Arya, A. Coates, A. Wellbrock and D.T. Young, 2011, High-altitude charged aerosols in the atmosphere of Titan, Planetary & Space Sciences, 59(9), 880-885
- Singh, V.P., T. Gupta, S.N. Tripathi, C. Jariwala and U. Das, 2011, Experimental study of the effects of environmental and fog condensation nuclei parameters on the rate of fog formation and dissipation using a new laboratory scale fog generation facility, Aerosol and Air Quality Research, 11(2), 140-154
- Arola, A., G. Schuster, G. Myhre, S. Kazadzis, S. Dey and S.N. Tripathi, 2011, Inferring absorbing organic carbon content from AERONET data, Atmospheric Chemistry and Physics, 11, 215-225
- Srivastava, A.K. and S.N. Tripathi, 2010, Numerical study for production of space charges within stratiform cloud, Journal of Earth System Science, 119(5), 627-638
- Ram, K., M.M. Sarin, and S.N. Tripathi, 2010, A 1 year record of carbonaceous aerosols from an urban site in the Indo-Gangetic plain: Characterization, sources and temporal variability, Journal of Geophysical Research, 115, D24313
- Eck, T. F., S.N. Tripathi et al., 2010, Climatological aspects of the optical properties of fine/coarse mode aerosol mixtures, Journal of Geophysical Research, 115, D19205
- Ram, K., M.M. Sarin and S.N. Tripathi, 2010, Inter-comparison of thermal and optical methods for determination of atmospheric black carbon and attenuation coefficient from an urban location in northern India, Atmospheric Research, 97(3), 335-342
- Baxla, S.P., A.A. Roy, T. Gupta, S.N. Tripathi and R. Bandyopadhyaya, 2009, Analysis of diurnal and seasonal variation of submicron outdoor aerosol mass and size distribution in a northern Indian city and its correlation to black carbon, Aerosol and Air Quality Research, 9, 458-469
- Nakajima, T. Y., T. Nakajima, K. Yoshimori, S.K. Mishra and S.N. Tripathi, 2009, Development of a light scattering solver applicable to particles of arbitrary shape on the basis of the surface-integral equations method of Muller-type (SIEM/M): Part 1. Methodology, accuracy of calculation and electromagnetic current on the particle surface, Applied Optics, 48(19), 3526-3536
- Ganguly, D., P. Ginoux, V. Ramaswamy, D.M. Winker, B.N. Holben and S.N. Tripathi, 2009, Retrieving the composition and concentration of aerosols over the Indo-Gangetic basin using CALIOP and AERONET data, Geophysical Research Letters, 36, L13806
- Michael, M., S.N. Tripathi, W. Borucki and R.C. Whitten, 2009, Highly charged cloud particles in the atmosphere of Venus, Journal of Geophysical Research (Planets), 114(E4), EO4008
- Mehta, B., C. Venkataraman, M. Bhushan and S.N. Tripathi, 2009, Identification of sources affecting fog formation using receptor modeling approaches and inventory estimates of sectoral emissions, Atmospheric Environment, 43(6), 1288-1295
- Roy, A. A., S. P. Baxla, T. Gupta, R. Bandyopadhyaya and S.N. Tripathi, 2009, Particles emitted from indoor combustion sources: size distribution measurement and chemical analysis, Inhalation Toxicology, 21(10), 837-848
- Nair, S., R.K. Ganguly, S.N. Tripathi, K. Satyanarayana and A.K. Suresh, 2008, Field observation of diurnal cycle of aerosol properties at a tropical station in India, Geophysical Research Letters, 35, L05807
- Mishra, S.K., S. Dey and S.N. Tripathi, 2008, Implication of particle composition and shape to dust radiative effect: A case study from the Great Indian desert, Geophysical Research Letters, 35(23), L23814
- Michael, M. and S.N. Tripathi, 2008, Effect of charging of aerosol in the lower atmosphere of Mars during the dust storm of 2001, Planetary and Space Sciences, 56(13), 1696-1702
- Mishra, S.K. and S.N. Tripathi, 2008, Modeling optical properties of mineral dust over the Indian Desert, Journal of Geophysical Research, 113, D23201
- Michael, M., S.N. Tripathi and S.K. Mishra, 2008, Dust charging and electrical conductivity in the day and night-time atmosphere of Mars, Journal of Geophysical Research (Planets), 113(E7), E07010
- Whitten, R.C., W.J. Borucki, K. O'Brien and S.N. Tripathi, 2008, Predictions of the electrical conductivity and charging of the cloud particles in Jupiter's atmosphere, Journal of Geophysical Research, 113(E4), E04001
- Dey, S. and S.N. Tripathi, 2008, Aerosol direct radiative effects over Kanpur in the Indo-Gangetic basin, northern India: Long-term (2001-2005) observations and implications to regional climate, Journal Geophysical Research, 113(D4), D04212
- Dey, S., S.N. Tripathi and S.K. Mishra, 2008, Probable mixing state of aerosols in the Indo-Gangetic Basin, Northern India, Geophysical Research Letters, 35(3), L03808
- S.N. Tripathi., A. Pattanaik and S. Dey, 2007, Aerosol indirect effect over Indo-Gangetic plain, Atmospheric Environment, 41(33), 7037-7047
- S.N. Tripathi., A.K. Srivastava, S. Dey, S.K. Satheesh and K. Krishnamoorthy, 2007, The vertical profile of atmospheric heating rate of black carbon aerosols at Kanpur in northern India, Atmospheric Environment, 41(32), 6909-6915
- Sharma, M., S. Kishore, S.N. Tripathi and S.N. Behera, 2007, Role of atmospheric ammonia in the formation of inorganic secondary particulate matter: A Study at Kanpur, India, Journal of Atmospheric Chemistry, 58, 1-17
- Nair, V.S., K. Krishnamoorthy, D.P. Alappattu, P.K. Kunhikrishnan, S. George, P.R. Nair, S. Babu, B. Abish, S.K. Satheesh, S.N. Tripathi et al., 2007, Wintertime aerosol characteristics over the Indo-Gangetic plain (IGP): Impacts of local boundary layer processes and long-range transport, Journal of Geophysical Research, 112(D13), D13205
- Whitten, R.C., W.J. Borucki and S.N. Tripathi, 2007, Predictions of the electrical conductivity and charging of the aerosols in the Titan's night time atmosphere, Journal of Geophysical Research (Planets), 112(E4), E04001
- Michael, M., M. Barani and S.N. Tripathi, 2007, Numerical predictions of aerosol charging and electrical conductivity of the lower atmosphere of Mars, Geophysical Research Letters, 34(4), L04201
- Dey, S. and S.N. Tripathi, 2007, Estimation of aerosol optical properties and radiative effects in the Ganga basin, northern India, during the winter time, Journal of Geophysical Research, 112(D3), D03203
- S.N. Tripathi., V. Tare, N. Chinnam et al., 2006, Measurements of atmospheric parameters during Indian Space Research Organization Geosphere Biosphere Programme land campaign II at a typical location in the Ganga basin: 1. Physical and optical properties, Journal of Geophysical Research, 111(D23), D23209
- Tare, V., S.N. Tripathi et al., 2006, Measurements of atmospheric parameters during Indian Space Research Organization Geosphere Biosphere Program land campaign II at a typical location in the Ganga basin: 2. Chemical properties, Journal of Geophysical Research, 111(D23), D23210
- S.N. Tripathi., S. Vishnoi, S. Kumar and R.G. Harrison, 2006, Computationally efficient expressions for the collision efficiency between electrically charged aerosol particles and cloud droplets, Quarterly Journal of Royal Meteorological Society, 132(618), 1717-1731
- Chinnam, N., S. Dey, S.N. Tripathi and M. Sharma, 2006, Dust events in Kanpur, northern India: Chemical evidence for source and implications to radiative forcing, Geophysical Research Letters, 33(8), L08803
- Borucki, W.J., R.C. Whitten, E.L.O. Bakes, E. Barth and S.N. Tripathi, 2006, Predictions of the electrical conductivity and charging of the aerosols in the Titan's atmosphere, Icarus, 181(2), 527-544
- Dey, S., S.N. Tripathi, R.P. Singh and B. N. Holben, 2006, Retrieval of black carbon and specific absorption over Kanpur city, northern India during 2001-2003 using AERONET data, Atmospheric Environment, 40(3), 445-456
- Kanawade, V.P. and S.N. Tripathi, 2006, Evidence for the role of ion-induced particle formation during an atmospheric nucleation event observed in Tropospheric Ozone Production about the Spring Equinox (TOPSE), Journal of Geophysical Research, 111(D2), D02209
- S.N. Tripathi., S. Dey, V. Tare and S.K. Satheesh, 2005, Aerosol black carbon radiative forcing at an industrial city in northern India, Geophysical Research Letters, 32(8), L08802
- S.N. Tripathi., S. Dey, V. Tare, S.K. Satheesh, S. Lal and S. Venkataramni, 2005, Enhanced layer of black carbon in a north Indian industrial city, Geophysical Research Letters, 32(12), L12802
- S.N. Tripathi., S. Dey, A. Chandel, S. Srivastava, R.P. Singh and B. N. Holben, 2005, Comparison of MODIS and AERONET derived aerosol optical depth over the Ganga basin, India, Annales Geophysicae, 23(4), 1093-1101
- Modgil, M.S., S. Kumar, S.N. Tripathi and E.R. Lovejoy, 2005, A parameterization of ion-induced nucleation of sulphuric acid and water for atmospheric conditions, Journal of Geophysical Research, 110(D19), D19205
- Dey, S., S.N. Tripathi, R.P. Singh and B.N. Holben, 2005, Seasonal variability of the aerosol parameters over Kanpur, an urban site in Indo-Gangetic basin, Advances in Space Research, 36(5), 778-782
- Dey, S., S.N. Tripathi, R.P. Singh and B.N. Holben, 2004, Influence of dust storms on the aerosol optical properties over the Indo-Gangetic basin, Journal of Geophysical Research, 109(D20), D20211
- Singh, R.P., S. Dey, S.N. Tripathi, V. Tare and B. Holben, 2004, Variability of aerosol parameters over Kanpur, northern India, Journal of Geophysical Research, 109(D23), D23206
- S.N. Tripathi and R.G. Harrison, 2002, Enhancement of contact nucleation by scavenging of charged aerosol particles, Atmospheric Research, 62(1), 57-70
- Mayya, Y.S., S.N. Tripathi and A. Khan, 2002, Boundary conditions and growth of mean charges for radioactive aerosol particles near absorbing surfaces. Journal of Aerosol Science, 33(5), 781-795
Other Article
- Michael, M., A. Yadav, S.N. Tripathi, V.P. Kanawade, A. Gaur, P. Sadavarte and C.Venkataraman, 2013, Simulation of trace gases and aerosols over the Indian Domain: Evaluation of the WRF-Chem model, Atmospheric Chemistry and Physics Discussion, 13, 12287-12336.
- Kaul, D.S., Tarun Gupta and S.N. Tripathi, 2012, Chemical and microphysical properties of the aerosol during foggy and nonfoggy episodes: A relationship between organic and inorganic content of the aerosol, Atmospheric Chemistry and Physics Discussion, 12, 14483-14524.
- Mishra, S.K., S.N. Tripathi, S.G. Aggarwal and A. Arola, 2010, Effects of particle shape, hematite content and semi-external mixing with carbonaceous components on the optical properties of accumulation mode mineral dust, Atmospheric Chemistry and Physics Discussion, 10, 1–48.
- Dey, S. and S.N. Tripathi, 2014, Remote Sensing of Atmospheric Aerosols in Aerosol Science: Technology and Applications, I. Colbeck and M. Lazaridis (eds), John Wiley & Sons Ltd, Chichester, 119-151.
- Srivastava, A.K., Sagnik Dey and S.N. Tripathi, 2012, Aerosol characteristics over the Indo-Gangetic basin: Implications to regional climate, In Hayder Abdul-Ruzzak (eds.), Atmospheric Aerosol Regional Characteristics–Chemistry and Physics, InTech, 47-80.
- Varunsheel, S. Ramachandran, S.N. Tripathi and Marykutty Michael, 2010, Chemistry and aerosols in the atmospheres of Earth and Mars, In S.A. Haider, V. Sheel, and S. Lal (eds.), Modeling of Planetary Atmospheres, Mcmillan Publishers India Ltd.
- S.N. Tripathi., M. Michael and R.G. Harrison, 2008, Profiles of ion and aerosol interactions in planetary atmospheres. In F. Leblane, K. L. Aplin, Y. Yair, R. G. Harrison, J. P. Lebreton, M. Blane (eds.), Planetary Atmospheric Electricity, Springer.
- Science Plan, Continental Tropical Convergence Zone Programme, Indian Climate Research Programme, Department of Science and Technology, Government of India, 2009.
- Member, Editorial Board of Asia Oceania GeoSciences-Planetary Sciences-Newsletter, 2007-2009.
- IASTA Bulletin on International Conference on Aerosols, Clouds and Indian Monsoon,2004.
- Singh, R.P., Vinod Tare and S.N. Tripathi, 2005, Aerosols, Clouds and Monsoon, Current Science, 88 (9), 1366-1368..
- Singh, R.P., Vinod Tare and S.N. Tripathi, 2005, Meeting Report on International conference on aerosols, clouds and monsoon, EOS, 86 (24), 228-229.
- Real time source apportionment study for Delhi, A Report on Impact of Lockdown on Ambient Air Quality prepared by CPCB, Ministry of Environment, Forest & Climate Change, Govt. of India, September 23, 2020,
- Ramanathan, V., M.J. Molina, D. Zaelke, N. Borgford-Parnell, K. Alex, M. Auffhammer, P. Bledsoe, W. Collins, B. Croes, F. Forman, S.N. Tripathi et al., Under 2 Degrees Celsius: Fast action policies to protect people and the planet from extreme climate changes. First Report of the Committee to Prevent Extreme Climate Change (CPECC), Chairs: V. Ramanathan, M. J. Molina and D., Released at COP22 Summit at Marrakech, November 14, 2016.
- Sharma, S., I.H. Rehman, V. Ramanathan, K. Balakrishnan, G. Beig, G. Carmichael, S.N. Tripathi et al., Breathing Cleaner Air: Ten scalable solutions for Indian cities. A self-organized talk force report for the world sustainable development summit, New Delhi, October 6, 2016. Task-Force Chairs: V. Ramanathan, I.H. Rehman & S. Sharma. Published by The Energy and resources Institute in collaboration with the University of California at San Diego
- Ramanathan, V., S. Sundar, R. Harnish S. Sharma, J. Seddon, B. Croes, A. Lloyd, S.N. Tripathi et al., India California Air Pollution Mitigation Program: Options to reduce road transport pollution in India. Published by The Energy and Resources Institute in collaboration with the University of California at San Diego and the California Air Resources Board, 2014.
- S.N. Tripathi., T. Gupta., B.K. Sapra and S. Ganju, Measurement of aerosol and liquid droplet size distributions and validation of aerosol and droplet microphysical models, 2009/36/119-BRNS/3384, 2013.
- Tripathi, S.N., S. Dayal and N. Srivastava, A fast microphysical model for mixed phase clouds, Department of Civil Engineering, Indian Institute of Technology Kanpur.
- Tripathi, S.N., X.P. Vancassel, R.G. Grainger, H.L. Rogers, 2004, A Fast Stratospheric Aerosol Microphysical Model (SAMM): H2SO4-H2O aerosol development and validation, AOPP memorandum, Department of Physics, University of Oxford
Additional Articles
- Airawat Research Foundation - The Center of Excellence in Artificial Intelligence for Sustainable Cities. Organised roundtable on “Addressing Urban Sustainability challenges – Budgetary recommendations to Finance Ministry”, January 2025, New Delhi
- Organized workshop on theme of Smart Transportation for Reducing Emissions and Congestion in Indian Cities (STREC), in NCR (IIT Kanpur Outreach Center) NOIDA on July 20, 2024.
- Organized a 'A Brainstorming Workshop on Sustainable Cities', March 9, 2024, National Aerosol Facility (NAF), IIT Kanpur.
- Organized Indian Aerosol Science and Technology Association Conference, in Hotel Vivanta, Navi Mumbai during December 12-14, 2023.
- Organized an online training program on Air Quality Management during February - March 2022, funded by World Bank.
- Organized North Indian Air Pollution meeting on Zoom, 23-24 August 2020.
- Organized IITK-UPPCB workshop on “National Knowledge Network (NKN) to support National Clean Air Programme”, Indira Gandhi Pratishthan, Lucknow on October 14-15, 2019.
- Organized IITK-PSI workshop on “Early Results from Delhi Air Quality Experiment 2017-18 and Future Forward”, India International Centre, New Delhi on October 26-27, 2018.
- Organized a DST meeting as National Coordinator for “National Network Programme on Aerosol (NNP-A) under Climate Change Programme of DST at Indian Institute of Technology Delhi on October 23, 2018.
- Organized IITK-MoES workshop on “Real-time Nationwide Low-Cost Sensor Network for Air Quality Monitoring” held at Ganga Auditorium, Indira Paryavaran Bhavan, Ministry of Environment, Forest and Climate Change, New Delhi on August 29, 2018.
- Organized DST-UKIERI workshop on “An Introduction to Earth Observation Techniques: Applications to the Land and Atmosphere” held at Indian Institute of Technology Kanpur from March 26-28, 2018.
- Organized DST National Workshop on “Aerosols: Science and Application” as part of proposed ‘National Network Programme on Climate Change and Aerosols’ held at Indian Institute of Technology-Kanpur, May 11-12, 2017.
- Organized DBT-RCPU Workshop: Biological solution to reducing industrial waste, environmental inefficiency and pollution in India, organized by Centre for Environmental Science & Engineering (CESE), Indian Institute of Technology-Kanpur, March 21-23, 2017.
- Organized Theme Meeting on Aerosol Behavior Studies in a Nuclear Reactor under Severe Accident Conditions held at Indian Institute of Technology-Kanpur, February 23-25, 2016.
- Organised Indo-US workshop on ‘Sources of Environmental Pollution in India: The influence of Municipal Solid Waste and Biomass Burning on Air Quality and the Microbiome of the Ganges’ held at Indian Institute of Technology-Kanpur, October 25-26, 2015.
- The Summer School on ‘Sustainable Cities’ was held at Indian Institute of Technology-Kanpur organized by Centre for Environmental Science and Engineering from June 2nd-27th, 2013 in collaboration with Univ. of Minnesota, Georgia Tech, NAE, Yale, NCAR and Univ. Colorado sponsored by USAID and NSF. The school was attended by more than 30 students and Scientists from IITs, collaborators Universities, ROI and ICLEI etc.
- Organised IITK-Archaeological Survey of India Joint workshop on ‘Study of Impacts of Atmospheric Haze on Taj Mahal Monument’ under Indo-US Science and technology forum at Indian Institute of Technology-Kanpur, February 17, 2012.
- An invited DST Training School on ‘Aerosol-Cloud Interaction’ was held at Indian Institute of Technology-Kanpur from 7th-15th March, 2009. The school was attended by more than 25 students and scientists from various IITs, Universities and research laboratories such as NPL, SPL, IITM, IMD etc.
- Co-Convenor of Tiger-Z (Indo-NASA Joint Field Experiment) workshop held at Indian Institute of Technology-Delhi, January 7-8, 2009.
- Invited talk at “Air Quality Challenges in Indian Cities”, Rajasthan Technical University, Kota, March 27, 2024, titled “Clean Air For Breathable and Livable Cities”.
- Invited talk at, INAE Workshop on “Sustainability in Water and Environment”, IIT BHU, February 26-27, 2024, titled “AI and Data Driven Approaches to Secure Clean Air for Sustainable Cities”.
- Keynote address at National Environmental Conference February 15-17, 2024, IIT Bombay. Talk titled “AI and Data Driven Approaches to Secure Clean Air for Sustainable Cities”.
- Keynote Speaker at International Conference on Climate Change and Agroecosystem: Threats, Opportunities and Solutions (INAGMET-2024), BHU, February 8-10, 2024. Talk tiled “Clean Air for Sustainable Agriculture: Air Pollution as a Major Threat to Food Security”.
- Invited speaker at INFOSYS PRIZE 2023 - WINNERS’ SYMPOSIUM - EDITION III, 12th January, 2024. Taj West End Hotel Bangalore. Talk titled “Clean Air Technologies for Sustainable Policies & Improved Public Health”.
- Invited speaker at Airshed Modelling for Air Quality Management, 04 December 2023, Delhi.
- Invited talk titled “Opportunities For Researchers To Support Air Quality Action” at National Consultation on Air Pollution and Health in India, AIIMS New Delhi, November 17, 2023.
- Delivered a talk titled Sustainable and Scalable Technologies for Air Quality Monitoring at Sustainable and Emerging Technologies for Food Safety and Environmental Toxicology (SET-FEST), October 12-13, 2023, Lucknow.
- Invited talk on “Scientific & Technological Contributions and Capacity Building Under NCAP”, Golden Jubilee Celebration of West Bengal Pollution Control Board, September 22, 2023.
- Invited talk titled “Clean Air and Water For Sustainable Future” at World Environment Day, IISER Kolkata, June 05, 2023.
- Invited talk titled “Clean Air and Water For Sustainable Future”, Research Scholars' Day 2023, Department of Sustainable Energy Engineering, IIT Kanpur, 01 June 2023.
- Delivered talk at Aakash Project 2023 Workshop in Delhi, titled “Nationwide Air Quality Monitoring Combining Sensors Plus Satellite Images with AI & ML”, March 28-29, 2023, India Habitat Centre, Lodhi Road, Delhi.
- Invited speaker at Regional (East) Meet of Institutes of Repute Associated with NCAP: Convergence of Knowledge, Institutional Capacity and Infrastructure Building, titled “Nationwide Air Quality Monitoring Combining Sensors Plus Satellite Images with AI & ML”, March 24 and 25, Hotel Chanakya, Patna.
- Delivered talk at Maharashtra Prathamik Shikshan Parishad (MPSP), titled “Scalable and Affordable Solutions for Hyperlocal Monitoring, Source Attribution and Source Control”, March 18, 2023.
- Delivered an invited talk at Indian Physics Association (IPA), Prof. P. A. Pandya Endowment Lecture, titled “Nationwide Air Quality Monitoring Combining Sensors Plus Satellite Images With AI & ML”, March 14, 2023, IIT Kanpur.
- Delivered a Keynote talk titled “Nano particles night time growth: Implications to Haze and Climate” in the international symposium, Nano -2023 (March 13-14) in Hyderabad.
- Delivered a talk, titled, “Combining Sensors plus satellite images with AI&ML for Nationwide Air Quality Monitoring” at One-day symposium on "Demystifying UNFCCC Conference of Parties (CoP) - International Negotiations vs Local Climate Action", 02 March 2023, IIT Kanpur.
- Delivered a lecture titled “Real-time Source Apportionment Using Advanced Instruments” at Winter School on Hands on Training on Instrumentation and Analytical Techniques, Central University of Jammu, 20 - 25 February 2023.
- Invited talk titled “Hybrid Technologies for Monitoring Particulate Matter, Source Attribution and Health Impacts at Scale” at Air Quality in Mumbai- A Consultative Stakeholder Workshop, 12 January 2023, Mumbai.
- Invited speaker at Institute Research Symposium (IRS'23), titled talk “Hybrid Technologies for Monitoring Particulate Matter, Source Attribution and Health Impacts at Scale”, January 07-08, 2023, IIT Kanpur.
- Delivered a talk titled “Nation Wide Sensor Based Monitoring and Source Attribution” at UKRI India/NERC Low-Cost Environmental Monitoring (LEMS) Workshop, December 14-15, 2022.
- Delivered a talk titled “Changes in Atmospheric Composition: Implication to Global and Regional Climate and Atmospheric Chemistry” at SUMANGALAM PANCHAMAHABHOOT, International conference series on VAYU: THE VITAL LIFE FORCE, December 3-4, 2022, Siksha ‘o’ Anusandhan (SoA) university, Bhubaneswar.
- Delivered talk titled “Hybrid Technologies for Monitoring Particulate Matter, Source Attribution and Health Impacts at Scale, Environment and Sustainability Event, Indian National Science Academy, Delhi, November 6-8, 2022.
- Delivered a talk titled “Scientific and Technological Solutions for Clean Air” at a symposium on “India’s Sustainable Future: Challenges and Opportunities vis-à-vis Global Perspectives” organized by Chandrakanta Kesavan Center for Energy Policy and Climate Solutions, IIT Kanpur, October 12, 2022.
- Invited talk titled “Nationwide sensor-based air quality monitoring: From laboratory to field deployments”, at RSC-IITM Desktop Seminar on Environmental Sciences, 11-12 Oct, 2022, organized by Royal Society of Chemistry, Environmental Science Journal (RSC) and IIT Madras.
- Delivered lecture titled “Clean Air for the Sustainable Future” at Recent Advances in Environmental Engineering towards Sustainability (10-14 Oct, 2022), organized by National Institute of Technology, Patna.
- Delivered a Keynote talk titled “Capacity Building And Technology Development By Universities In India’s Clean Air Program” at “Friday Colloquium Series at CSIR-NPL, New Delhi, Oct 07, 2022.
- Invited speaker at “Tech for Impact -Bharat” 2022 meeting organized jointly by Principal Scientific Advisor Office Principal Scientific Adviser to GoI and NIAS, Bengaluru, September 12, 2022.
- Invited speaker at Air Sensors International Conference (ASIC), Bangalore, titled “Journey of Sensor Based Air Quality Monitoring in India”. August 26, 2022.
- Delivered a talk titled “Role of National Clean Air Program (NCAP) in Tackling Air Pollution” Storytelling for Environmental Change: Tackling Air Pollution in the World’s Most Polluted City, Jamia Millia Islamia, New Delhi, 22-23 August 2022.
- Invited talk titled “Capacity Building and Technology Development by Universities and Research laboratories In India’s Clean Air Program Capacity Building Workshop on Air Action Plan, August 22, 2022.
- Invited Speaker at an online conference “Advancing Environmental Innovations In India, Insights from Experimental Research, July 22, 2022, hosted by Energy Policy Institute at the University of Chicago.
- Invited talk at Max Planck Institute for Chemistry, Mainz, titled “Capacity Building And Technology Development By Universities In India’s Clean Air Program”, July 14, 2022.
- Invited talk in Azadi ka Amrit Mahotsav, 75 lecture series, Indian Council of Agriculture Research, titled “Capacity Building and Technology Development by Technical Institutions in National Clean Air Program”, July 13, 2022.
- Delivered the scientific talk at TROPOS, Leibniz Institute for Tropospheric Research, Germany, on “Capacity Building and Technology Development by Universities In India’s Clean Air Program”, July 11, 2022.
- “Hybrid Air Quality Monitoring Network”, National Air Quality Resource Framework (NARFI), June 22, 2022, IIC, New Delhi.
- Invited talk titled “Hyper Local Air Quality Monitoring And Source Attribution In Cities Of Lucknow And Kanpur, Advisors and Influencers round table, June 06, 2022, IIT Kanpur.
- Invited talked titled “Achieving clean air goal in sustainable Indian Cities”, Webinar on Air quality management and sustainability June 03, 2022, Dayal Bagh Educational Institute, Agra.
- Invited talk titled “Capacity Building and Technology Development by Universities in India’s Clean Air Program”, National workshop on “Air Pollution and Health Impacts” (Need of interdisciplinary Research), June 01, 2022, Department of Environmental Sciences, Central University of Jammu.
- Invited talk in a Consultation Workshop on” Implementing ICCC as a Service model in cities” at India Habitat Centre (New Delhi), December 15, 2021.
- Keynote talk titled, “Precipitation in Himalayas: Role of Aerosols and Orography” in Workshop on Himalayan Biosphere-Atmosphere-Hydrosphere Interactions: Status, Challenges, and Way Forward Under National Mission on Himalayan Studies (NMHS), MoEFCC, GoI, G. B. Pant National Institute of Himalayan Environment (GBPNIHE), Almora, Uttarakhand, December 14, 2021.
- Invited Talk on Sensor Based AQ Network in India, US Environment Protection Agency, October 26, 2021.
- Invited Talk on New Technologies to Measure Air Pollution and its Sources, Air Pollution: Facts to Act, Lucknow, September 29, 2021.
- Plenary Talk on Sources, processing and impacts of atmospheric haze over Indo Gangetic Plains (IGP), Frontiers in Geoscience Research Conference, PRL, September 28, 2021.
- Invited Talk on Assessment of Low-Cost Sensor based PM2.5 and PM10 Monitoring Network in Maharashtra, Third India Air Quality Convening, September 27, 2021.
- Invited talk on “Formation, composition and, the evolution of Secondary Organic Aerosols (SOA) during the winter periods in Indo-Gangetic Plain, Joint Research Centre, European Commission, September 24, 2021.
- Low-cost sensor-based air quality monitoring networks, Capacity development programme on air quality management and emission reduction of PM 2.5 for Asian countries, Regional Resource Center for Asia and the Pacific (RRC.AP), Asian Institute of Technology, Bangkok, September 13, 2021.
- Advanced monitoring technologies and Capacity Building to Support India's Clean Air Program, Institute of Advanced Sustainability Studies, Potsdam, September 07, 2021.
- Advanced Technologies to help Clean Air Program, Tata Steel, September 07, 2021.
- Invited talk titled, “Capacity Building for Air Pollution Control in India” on National Knowledge Network under NCAP, Air Pollution Webinar, (January 20, 2021).
- Invited talk titled, “Air Pollution Monitoring and Analysis in India”, Symposium on Air Pollution Measurement and Analysis Systems (APMAS) Global Perspectives and Approach for India, Webinar organized by the Indian Institute of Technology Delhi and the World Bank (January 15-20, 2021).
- Invited talk titled “Capacity Building for Air Pollution Control in India”, Symposium on Air Pollution Measurement and Analysis Systems (APMAS) Global Perspectives and Approach for India, Webinar organized by the Indian Institute of Technology Delhi and the World Bank (January 15-20, 2021).
- Invited talk titled “Particulate Matter and Gas Sensors Calibrations” in online Technical Exchange on Mainstreaming of New Air Quality Sensor Technologies, Webinar organized by Department of Environmental Health (December 16, 2020).
- Plenary talk “Scaling of sensor-based monitoring, real time source apportionment and capacity building under the National Clean Air Mission”, webinar on Fifth Indian International Conference On Air Quality Management (IICAQM 2020), jointly organized by Department of Civil Engineering, IIT Madras, University of Bath (UK), Australian National University (Australia), and UFZ Helmholtz Centre for Environmental Research (Germany), (December 11, 2020).
- Panelist and Speaker, Webinar on Source Apportionment and Emission Inventories studies in nonattainment cities in India, IIT Delhi (November 26, 2020).
- Invited talk titled “Nation Wide Sensor- based Monitoring, Real time Source Apportionment and Capacity Building under the National Clean Air Mission, Webinar organized by Shakti Sustainable Energy Foundation (November 17, 2020).
- Invited talk titled “Aerosols and it’s Impacts on Climate and Crop Yield” Webinar on Agriculture and Food Technologies and Mechanisms of adaptation to Climate Change, in collaboration with Department for International Cooperation of the Russian Academy of Sciences organized by CSIR National Botanical Research Institute, Lucknow (November 11, 2020).
- Invited talk titled “Air Pollution-Land Use-Cloud Interactions: Impact on Climate Change, Agriculture, Hydrological Cycle, Human Health and Monumental Heritages” in Online Sustainability Seminar Series, webinar hosted by KPCSD, IIT Gandhinagar (November 9, 2020).
- Invited talk titled “Sensor-based Streaming Analytics and Near-Real Time source Apportionment of Air Pollution” in Online International Conference on Aerosol Air Quality, Climate Change and Impact on Water Resources and Livelihoods in the Greater Himalayas, webinar hosted by ARIES Nainital (September 14, 2020).
- Panel discussion on “Air Pollution Data and Science” in Confederation of Indian Industry (CII) 15th Sustainability Summit (September 10, 2020).
- Invited talk titled, “Tracking Sources of Air Pollution in Real-Time” CERCA Webinar on the occasion of International Day of Clean Air for Blue Skies (September 7, 2020).
- Invited talk titled, “Unraveling Tiny Monstrous Organic Aerosols: Key to Achieve Blue Skies and Improved Human Health” in ACS Science Talks: Virtual Lecture Series (August 28, 2020).
- Invited talk tilted, “Importance and need for reliable and robust data for improving air quality” in India Clean Air Summit hosted by Center for Study of Science, Technology and Policy (CSTEP) (August 25, 2020).
- Invited talk titled “Air Quality in New Delhi during the COVID-19 induced lockdown” in The Impacts of COVID-19 Lockdowns on India’s Air Quality, webinar hosted by World Bank and NCAP Knowledge Network, (July 28, 2020).
- Invited talk titled “Published results of Air Quality Experiment in Delhi”, meeting organized by Global Strategic Communications Council (GSCC), (July 23, 2020).
- Invited lecture titled “Implementation of National Clean Air Programme” in National Clean Air Program, Princeton University's first annual conference on Global India, Princeton University (USA, March 27, 2020).
- Invited talk titled, “Combination of dynamic real-time source apportionment and low-cost sensors for air pollution reduction” in Earth Science Lecture Series, IIT Gandhinagar (Ahmedabad, January 6, 2020).
- Invited talk titled, “Development and adoption of low-cost sensor-based nationwide air quality monitoring networks” in Workshop Brainstorming Session on Low-cost Sensor based Real-time Air Quality Monitoring with advances in IoT, Machine Learning and AI, Prithvi Bhavan, India Habitat Centre (Delhi, January 2, 2020).
- Invited talk titled, “Air Quality Improvement through Dynamic Source Apportionment” in 4th Indian International Conference on Air Quality Management, IIT Bombay (Mumbai, December 19, 2019).
- Invited talk titled, “Dynamic Source Apportionment for Air Quality Improvement” in India CEO Forum for Clean Air at India Habitat Centre (New Delhi, December 17, 2019).
- Invited speaker in the panel discussion on “Alignment of CSR with SDGs with sector focus on Air Pollution” in CII National CSR Summit, Hyatt Regency (New Delhi, December 12, 2019).
- Invited talk titled, “Role of sensor technology in policymaking”, stakeholder consultation workshop on 'Low-Cost Air Quality Monitoring Sensors in India: Applications and Way Forward' organized by Shakti Sustainable Energy Foundation at Casuarina Hall, India Habitat Centre (New Delhi, August 7, 2019).
- Invited A collaborative project Streaming Analytics over Temporal Variables from Air quality Monitoring (SATVAM)to understand air quality in India and new learning of pollution sources in Gangetic Plains” in Evening Networking Reception with Duke faculty and conference delegates at Desire hotel Le Meridien (Delhi, December 13, 2018).
- Invited talk titled, “Aerosol-cloud-rainfall interactions over India, in Indian Aerosol Science and Technology Association (IASTA), conference at IIT Delhi (Delhi, November 26, 2018).
- Invited talk titled, “Urban and aerosol-induced short to long term changes in rainfall in Indian summer monsoon region and associated implications to climate” in 63rd Sir Albert Charles Seward Memorial Lecture, Birbal Sahni Institute of Palaeosciences (Lucknow, November 14, 2018).
- Invited talk titled, “Current state of play of air pollution-challenges and gaps for cities of Lucknow and Kanpur” in National Workshop Scoping Study on Clean Air at Hotel Claridges (New Delhi, June 15, 2018).
- Invited talk titled, “Delhi air quality experiment” in Stakeholder Consultation Workshop on NCAP organized by Ministry of Environment, Forest and Climate Change alongwith CPCB, World Bank and TERI at Ganga Auditorium, Vayu Wing, Indira Paryavaran Bhawan, JorBagh in (Delhi, April 18, 2018).
- Invited talk titled, Aerosol-surface forcing-Rainfall associations over Gangetic Plains, in “National Conference on Recent Advances in Environmental Sciences, (NCRAES-2018)” at School of Environmental Science, Jawaharlal Nehru University in (Delhi, March 22, 2018).
- Invited talk titled, Problem, measurement and sources- The air quality conundrum in DainikJagran Clean Air Conclave at Hotel Hilton Gargen In (Lucknow, February 17, 2018).
- Invited talk titled, Sensor based technologies for air pollution monitoring in Technologies for management and abatement of air pollution at Ministry of Environment, Forest and Climate Change (Delhi, February 13, 2018).
- Popular Lecture titled, The state of air pollution in Indo-Gangetic Plains and possible solutions, Dayalbagh Educational Institute, (Agra, December 22, 2017).
- Invited talk titled, Cities Infrastructure & Sustainability cities in a training program as part of joint SRU- Clarkson-ICMR initiative to build capacities in the areas of Air Quality, Climate and Health, at the SRU-ICMR Center for Advanced Research, SRU (Chennai, December19-20, 2017).
- Panelist, Washington University St Louis Forum on Energy, Environment and Agriculture at Leela Palace Hotel (New Delhi, December 15-16, 2017).
- Invited talk titled, Aerosol-cloud-surface-radiation-rainfall-climate interactions over Indian Monsoon region, in “5th Rajasthan Science Congress” at Amity University, (Jaipur, October 13, 2017).
- Invited talk titled, Aerosol-surface forcing-Rainfall associations over Gangetic Plains, in National Workshop on “Urban Climate: Science, impacts and Adaptation” at Indian Institute of Technology-Bhubaneswar (Bhubaneswar, September 21-22, 2017).
- Invited talk titled, Aerosol impact on whether to climate scales over IG Basin: Results from observational and modeling based analysis, in International conference on Understanding, Predicting and projecting the Climate change over Asian Region (UPCAR), at S.V. University (Tirupati, June 26- 28, 2017).
- Invited talk titled, Chemical properties of geoengineering aerosols, in National Roundtable Discussion on Geoengineering and India: Science and Policy, at Indian Institute of Technology-Delhi (New Delhi, June 23, 2017).
- Keynote talk titled, ‘Hygroscopicity-CCN-clouds and rainfall associations over Ganga Plains’ at Wadia Institute of Himalayan Geology (Dehradun, May 18, 2017).
- Lead talk titled, ‘Direct and indirect effects of aerosols on radiative forcing and rainfall over Indo-Gangetic plains in International Conference on Aerosol Climate Change Connection (AC3) at Bose Institute (Darjeeling, April 25, 2017).
- Invited talk titled, ‘Scale and adequacy of monitoring needed in Indian cities’, in Global Strategic Communications Council (GSCC) Air Quality Workshop at Juniper Hall, IHC (New Delhi, April 12, 2017).
- Invited talk titled, ‘Aerosol direct and indirect effects in Gangetic plains’, in Brainstorming Meeting on Climate change research in India: Progress, challenges, opportunities and way forward, BHU (Varanasi, February 23, 2017).
- Invited talk titled, ‘Aerosol-Cloud-Surface-Radiation-Rainfall interactions over Indo-Gangetic Plains (IGP)’ in Indo-Dutch International conference ‘Climate and Atmospheric Sciences & Applications’ at Indian Institute of Technology-Delhi (New Delhi, February 21, 2017).
- Invited talk titled ‘Aerosol pollution: Implications to health, economy and climate’, INSPIRE-2017 Programme at Amity University (Lucknow, February 15, 2017).
- Lead talk titled ‘Air pollution sources in India: Measurement and latest findings’ Workshop on Air Quality at Hotel Westinn (Varanasi, December 12, 2016).
- Invited talk titled ‘Coupling of aerosol-land-cloud-rainfall system over Gangetic Plains: Observations and modeling analysis” Indo-UK Water Center (IUKWC) workshop at IITM (Pune, November 30, 2016).
- Invited talk titled ‘Variability in aerosol properties, their direct and indirect effect over Gangetic Plains’ Seminar at Centre for Ecology and Hydrology, UK (Wallingford, September 17, 2016).
- Invited talk titled ‘Air pollution sources in India: measurements and latest findings, Air Quality in Indian Cities at Taj Hotel (Lucknow, May 25-26, 2016).
- Invited talk titled ‘Organic aerosols (OA) in Gangetic Basin: Composition, Chemistry, CCN, Radiative and health effects’, Workshop on biosphere-atmosphere interactions and impacts on climate and air quality and the iLEAPS SSC meeting in IISER, Mohali (Chandigarh, March 21, 2016).
- Invited talk titled ‘Air pollution implications to health, climate, agriculture and economy’, Surya Roundtable Meeting on Climate Credit Pilot Project at India International Centre (New Delhi, March 15, 2016).
- Invited talk titled ‘Aerosol's impact on health and climate of Gangetic Plain’, INSPIRE 2016 Programme at Amity University (Gwalior, January 21, 2016).
- Invited talk titled ‘Smoke, Dust, and Haze: Implications to health, climate, and economy’, INAE Kanpur Chapter Seminar at Indian Institute of Technology (Kanpur, January 20, 2016).
- Invited talk titled ‘Discoloration of the TajMahal, Adverse Health effects and Climate Forcing due to Municipal Solid Waste and Dung Cake Burni’, Workshop on Developing Smart, Healthy and Sustainable Cities: Learnings from US, China and India at The Lalit Hotel (New Delhi, January 11, 2016).
- Invited talk titled ‘Hydro climate of gangetic system’ India-UK Workshop on Future Ganga: Science Needs for Water Security at Tal Mahel Hotel (New Delhi, December 3, 2015).
- Invited talk titled ‘The human-ganga biome interactions: Unravelling the influences of environmental pollutants on humans and a living river’ Workshop on Non Putreying Properties of Ganga Water at All India Institute of Medical Sciences (New Delhi, November 16, 2015).
- Invited talk titled ‘Dust, other ions can cause health problem’ Birbal Sahni Institute of Palaeobotany (Lucknow, August 24, 2015).
- Contributed talk ‘Particulate pollution and daily surface rainfall: Observational study over Indian summer monsoon region’ AGU Chapman conference on Evolution of the Asian Monsoon and its Impact on Landscape, Environment and Society: Using the Past as the Key to the Future, (The Chinese University of Hongkong, June 14-18, 2015).
- Contributed talk ‘Optical properties of brown carbon and its impact on earth's radiative budget’ Workshop for Developing Priority Themes and Activities for IGAC Monsoon Asia and Oceania Networking Group (IGAC-MANGO), Asian Institute of Technology (Bangkok, Thailand, June 11-12, 2015).
- Invited participant ‘Science-Policy Dialogue’, organized by the Scientific Advisory Panel of the Climate and Clean Air Coalition (CCAC) to Reduce Short-Lived Climate Pollutants (SLCP), Headquarters of World Meteorological Organization (Geneva, May 20-21, 2015).
- Contributed talk titled ‘Size resolved fog water chemistry and its atmospheric implications’ European Geosciences Union (Vienna, Austria, April 12-17, 2015).
- Invited talk titled 'Aerosol's impacts on climate, health, agriculture and monuments', Chandigarh Science Congress, Punjab University (Chandigarh, February 25, 2015).
- Invited talk titled ‘Aerosol-cloud-rainfall associations over India’, International Workshop on Climate Change, Ansal University (Gurgaon, January 12, 2015).
- Invited talk titled ‘Atmospheric observations and laboratory studies of carbonaceous aerosols’, Indian Aerosol Science and Technology Association, Biennial Conference, (Banaras Hindu University, Varanasi, November 12, 2014).
- Invited talk titled ‘Brown carbon absorption and its Impact on atmospheric radiative forcing’, ABC (Atmospheric Brown Clouds) – SLCP (Short-Lived Climate Pollutants) symposium in Tokyo, (Japan, July 21-23, 2014).
- Theme Leader and organiser, Clean Air, Indo-German Frontiers of Engineering, Potsdam, (Germany, June 23-25, 2014).
- Invited talk ‘1st Workshop on Climate Science and Policy, Indian Institute of Technology-Bombay, (Mumbai, March 6-7, 2014).
- Invited talk ‘Scientific basis for knowledge to action’, Policy Conclave on Reducing Vehicular Emissions to Improve Air Quality at TajHotel, (New Delhi, February 4, 2014).
- Invited talk titled ‘Observations and monitoring needs’, Policy conclave on reducing vehicular emissions to improve air quality at TajHotel, (New Delhi, February 4, 2014).
- Invited Interdisciplinary Lecture titled ‘Atmospheric aerosol measurements: India perspective’, National Space Science Symposium, Dibrugarh University, (Assam, February 1, 2014).
- Plenary lecture on Long-term field observations and laboratory studies of atmospheric aerosols from Kanpur, Indo-Gangetic Basin, in 8th Asian Aerosol Conference, Australian Technology Park, Sydney, (Australia, December 3, 2013).
- Invited talk on 'Aerosol measurements: India perspective', India-California Air-Pollution Mitigation Program: Initiative for Mitigating Air Pollution from the Transportation Sector, Scripps Institute of Oceanography and The Energy and Resource Institute, Oakland, CA, (USA, October 22, 2013).
- Invited talk on 'Role of chemical composition on CCN activity and Evaluation of microphysics parameterizations in WRF against CAIPEEX profiles' In CAIPEX Science meeting, Indian Institute of Tropical Meteorology, (Pune, October 17, 2013).
- Invited talk titled ‘Long-Term field observations and laboratory studies of atmospheric aerosols from Kanpur, Indo-Gangetic Basin’, Center for Climate Change, Indian Institute of Technology-Bombay (Mumbai, October 9, 2013).
- Invited talk on 'Evaluation of WRF-chem simulations during an extreme rainfall event over Indo-Gangetic Plain', in Monsoon Research and Prediction, Indo French Centre for Promotion of Advance Research in coordination with MoES, (New Delhi, October 5, 2013).
- Invited talk in a ‘CAIPEEX-Phase III – IGP campaign meeting’ organized by Indian Institute of Tropical Meteorology, (Pune, August 30, 2013).
- Invited talk in a workshop 'Mars Orbiter Mission' organized by Physical Research Laboratory, (Ahmedabad, July 26-27, 2013).
- Invited talk in a workshop ‘First Annual Regional Atmospheric Science (FARAS)’ organized by International Center for Integrated Mountain Development (ICIMOD), (Kathmandu, June 13-14, 2013).
- Invited lecture in Naraina Group of Institution, (Kanpur, June 11, 2013).
- GCR Generated Aerosol Electrification and the Effects on Cloud Microphysics in Earth and Planetary Atmospheres, Laboratoire de Physique et Chimie de l'Environnement et de l'Espace, CNRS, Orleans, (France, July 4, 2012).
- Invited talk titled ‘Climate impacts of aerosol over Ganga Basin’ in a Alpine Summer School on Climate, Aerosols and the Cryosphere jointly organized by CNRS, France, ISAC-CNR, Italy and NSF, USA at Valsavarenche, Valle d'Aosta (Italy, June 27, 2012).
- Invited talk in a workshop organised by International Center for Integrated Mountain Development (ICIMOD), Kathmandu, (Nepal, April 2-3, 2012).
- Invited talk titled 'Climate impacts of aerosols' in a conference jointly organized by Department of HSS, IITK and Liberty Institute, Delhi on 'Climate Change: Science and Society', (IITK March 30-31, 2012).
- Invited lecture in national seminar on Interdisciplinary application of weather and climate- Computational Perspective, C-DAC, (Pune, January 25, 2012).
- Invited talk in US - India Workshop on Air Quality and Climate in Administrative Staff College of India, (Hyderabad, Sept. 12-14, 2011).
- Lead Speaker in Indo-German Frontier of Engineering, (Khandala, June 2011).
- Invited talk at Bhabha Atomic Research Center, (Mumbai, June 09, 2011).
- Invited talk, QIP Course, Indian Institute of Technology Delhi (Delhi, May 2011).
- Invited talk in Brain Storming Session on Technology Vision 2035, IT-BHU, (Varanasi, May 2011).
- Invited lecture in Brain Storming Session on Mars, Physical Research Laboratory, (Ahmedabad, March 2011).
- Invited Lecture, Colloquium, National Physical Laboratory, (New Delhi, March 2011).
- Invited talk, National Atmospheric Research Laboratory, Department of Space, (Gadanki, February 2011).
- Invited lecture in local chapter of Institution of Engineers, Harcourt Butler Technical University (Kanpur, 2010).
- Invited talk, Geophysical Fluid Dynamical Laboratory, Princeton University, (US, June 2010).
- Invited lecture, Planetary Exploration Program of ISRO, Physical Research Laboratory, (Ahmedabad, May 2009).
- Invited Colloquium, Physical Research Laboratory, (Ahmedabad, May 2009).
- Lead Speaker, Third Indo-US Frontier of Science (Agra, March 1-4, 2009).
- Invited Lecture at Aryabhatta Research Institute of Observational Sciences (ARIES), (Nainital, October 2008).
- Lecture at Air Force Administrative College, (Coimbatore, December 2007).
- Five lectures delivered at the Winter School on Modeling of Planetary Atmospheres organised by Physical Research Laboratory, (Ahmedabad, January 2007).
- Invited seminar at Center for Climate System Modeling, The University of Tokyo, (Japan, July 2006).
- Invited talk in Department of Chemical Engineering, Institute of Technology, (Banaras Hindu University, Varanasi, February 2006).
- Invited talk in workshop on Nanoparticle Aerosol Science and Technology (NAST): Emerging Trends and Priorities (IIT Mumbai, December 2005).
- Invited lecture at Center for Atmospheric and Oceanic Sciences, IISc, (Bangalore, September 2005).
- Five invited lectures in the 4th PG course on Space and Atmospheric Science of CSSTEAP (Center for Space and Technology Education in Asia and Pacific), (Physical Research Laboratory, Ahmedabad, July 2005).
- Invited seminar given at Aeronomy Laboratory National Oceanographic and Atmospheric Administration, (Boulder, US, June 2004).
- Academic Staff College, Banaras Hindu University (Varanasi, March 2004).
- Invited lecture in local chapter of Institution of Engineers, Harcourt Butler Technical University (Kanpur, January 2004).